WordPressプラグイン「YS LeadGen – Popup Builder, Optin Forms, Exit Intent & Lead Generation for WordPress」にクロスサイトスクリプティング（XSS）の脆弱性（CVE-2026-1256）
概要
WordPressプラグイン「YS LeadGen – Popup Builder, Optin Forms, Exit Intent & Lead Generation for WordPress」にクロスサイトスクリプティング（XSS）の脆弱性が確認されました。
バージョン 2.1.4 以前に影響があります。
修正版 2.1.5 への更新が推奨されます。
脆弱性の基本情報
| 脆弱性ID |
CVE-2026-1256 WF-b62b8619-4348-4cf7-a572-aa6df20bdc3a |
|---|---|
| 脆弱性の種類 | クロスサイトスクリプティング（XSS） |
| 危険度 | 中 |
| CVSSスコア |
6.4（CVSS v3.1） CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N |
| 公開日 | 2026年9月18日 |
| 更新日 | 2026年9月19日 |
影響を受ける製品
| 製品 | 影響を受けるバージョン | 修正版 | 出典 |
|---|---|---|---|
| WordPressプラグイン「YS LeadGen – Popup Builder, Optin Forms, Exit Intent & Lead Generation for WordPress」 |
2.1.4 以前 | 2.1.5 | Wordfence Intelligence |
推奨対応
- WordPressプラグイン「YS LeadGen – Popup Builder, Optin Forms, Exit Intent & Lead Generation for WordPress」を修正版 2.1.5 またはそれ以降の公式最新版へ更新してください。
情報元の原文
Wordfence Intelligence
YS LeadGen – Popups, Opt-ins & Lead Capture <= 2.1.4 - Missing Authorization to Authenticated (Subscriber+) Stored Cross-Site Scripting via User Input
The YS LeadGen plugin for WordPress is vulnerable to authorization bypass and Stored Cross-Site Scripting via multiple AJAX endpoints in all versions up to, and including, 2.1.4 due to missing capability checks on popup management actions. This makes it possible for authenticated attackers, with Subscriber-level access and above, to create arbitrary popups and inject malicious JavaScript that executes when the popup is displayed, leading to Stored XSS.
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